Frameworks

Haystack vs LangGraph

How Haystack and LangGraph compare on real-world demand, licensing, adoption and positioning — straight from the Agent Reality Index.

Agent Reality Index
Haystack #3 in Frameworks · 63.1 / 100 LangGraph #2 in Frameworks · 64.0 / 100
Dimension Haystack LangGraph
Agent Reality Index 63.1 / 100 (#3) 64.0 / 100 (#2)
Monthly search demand ~4.6k/mo ~33k/mo
Licensing Open-source Open-source
Developer adoption 26k★ on GitHub 38k★ on GitHub
Positioning Low-level / composable · Single-agent Low-level / composable · Single-agent

The verdict

Haystack and LangGraph are neck-and-neck on the Agent Reality Index (63.1 vs 64.0). The gap is small enough that the right pick comes down to fit rather than popularity: Haystack is open-source, while LangGraph is open-source. Use the positioning row above to choose by how you actually want to work.

Figures auto-generated from the Agent Reality Index and refreshed monthly. How the index is built →

Common questions

Frequently asked questions

What is the difference between Haystack and LangGraph?

How Haystack and LangGraph compare on real-world demand, licensing, adoption and positioning — straight from the Agent Reality Index.

Is Haystack or LangGraph better?

Haystack and LangGraph are neck-and-neck on the Agent Reality Index (63.1 vs 64.0). The gap is small enough that the right pick comes down to fit rather than popularity: Haystack is open-source, while LangGraph is open-source. Use the positioning row above to choose by how you actually want to work.

How do Haystack and LangGraph compare on the Agent Reality Index?

On the Agent Reality Index, Haystack scores 63.1 of 100 (ranked #3 in Frameworks) and LangGraph scores 64.0 of 100 (#2 in Frameworks). The index weights real-world demand most heavily and refreshes monthly.

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